Russian localization

Well, all in the name. I'm happy to support this localization in the future.

There is a question, though:

`$head = array( "title" =>` is `CSS Zen Garden: The Beauty in CSS Design` while `$intro = array("h1"` and `"h2"` are `The Beauty of CSS Design`. So `in` and `of`—is it OK to have two different slogans? Right now it's translated to Russian according to original text.